<?php
 
$array = [
	"иван",
	"иванов",
	"иванович",
	"мичурина",
	"мужчина",
	"я не робот",
	[
		"английский",
		"немецкий",
	],
	];
 
$fields = [
	"Имя",
	"Фамилия",
	"Отчество",
	"Адрес",
	"Пол",
	"Робот",
	"Языки"
];
 
function array_to_string(array $array, array $fields) :string
{
	$return = function($value) :string
	{
		return is_array($value) ? implode($value, ", ") : $value;
	};
 
	foreach($array as $key=>$value)
	{
		$array[$key] = $fields[$key] . ": " . $return($value);
	}
 
	$array = implode($array, " ");
 
	return $array;
}
 
var_dump(array_to_string($array, $fields));

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